remove kdbg libksieve0 libice-dev kwifimanager libart-2.0-dev Reading package lists... Building dependency tree... Reading state information... Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libice-dev : Depends: libice6 (= 2:1.0.4-1) but 4.3.0.dfsg.1-14sarge7 is to be installed Depends: x11proto-core-dev but it is not going to be installed PreDepends: x11-common (>= 1:7.0.0) but it is not going to be installed E: Broken packages